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Harry C. Karcher received US Patent No. 2,229,743 on January 28, 1941, filed December 1, 1937.
The patent's description opens (from the scanned text):
This invention relates primarily to structures at least partially formed from paper or similar sheet material and while the invention is primarily concerned with the provision of such a structure adapted for use as heat insulation, certain features of the invention are capable of broader use and, accordingly, the invention is not to be understood as being solely restricted thereto.
- Author
- Harry C. Karcher
- Published by
- US Patent Office
- Series
- US Patent No. 2,229,743
- Date
- January 28, 1941
- Library no.
- ACL Doc 22830 · asbestosclaims.law/library/22830
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 8 pages · 936 KB
Where it was listed
- Asbestos, March 1941, in its patents department (the year's issues)
Cite this document
Harry C. Karcher. “Insulation and Like Structures (US Patent 2,229,743, 1941).” January 28, 1941. US Patent No. 2,229,743. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22830. https://asbestosclaims.law/library/22830.
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